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I'm building a new rocket assembly for my jet pack and I was wondering how many 'vents' or grooves there are on the base piece of the assembly? I'm talking about the red circular end of the main yellow tank that is the base of the 2 upper parts of the rocket assembly. Looking at the pics I'm thinking there are 15 of them but I need some opinions. Thanks!

I'm building a new rocket assembly for my jet pack and I was wondering how many 'vents' or grooves there are on the base piece of the assembly? I'm talking about the red circular end of the main yellow tank that is the base of the 2 upper parts of the rocket assembly. Looking at the pics I'm thinking there are 20 of them but I need some opinions. Thanks!

My second generation MB pack has 12 of them. Not sure if it is accurate or not, but it looks good.

I've got the same pack too. I love it but always thought it was a little small. I was surprised that the rocket was reworked to be even smaller than the first MB pack. I'm building a larger rocket for it now. I've always wanted to build a bigger more accureate movie-sized pack and I figure I may as well once I get my new rocket finished.

i'm certain there are more than 12 on the movie jet pack. This is the best pic I could find (thanks Brak's) of the part in question and I see 10 vents in this view. How many more do you figure are out of view?

I have a drawing at home that might help. I took a reference photo from MoM and made an assumption that the main tube on the pack was 4" in diameter. I scaled the pic to this size, then measured the different sides of the details you are talking about. I drew up a nifty little image on graph paper based on the visible details and the dimensions that I measured. It is a view from the top. The details were evenly spaced, and it came out perfect! There were no odd spaces left over. Even if the scale on the pic is changed, the number of vents should remain the same. I'll scan it in when I get home. I think it will help you out.

Ok, the one picture with the link is from the MOM exibit.
There are definately less teeth on that one.
Is the posted pic from the AOSW suit?
That may be where the descrepency lies.
They could theoretically be different in number seeing as how they are different tour suits.